What are the diseases and pests of camellias
Article summary: This article discusses the diseases and pests of camellias, as well as the main insect pests and their control in the field of green plants and flowers. Below, the editor will provide a detailed explanation.
Camellias are traditional ornamental flowers in China. The flowers of camellias are very bright and have been loved by many people. Many people enjoy growing camellias, and during the cultivation process, they may encounter the impact of diseases and pests. So, what are the diseases and pests of camellias? Let the editor explain the main insect pests and their control.
【Diseases and Pests of Camellias】
In the process of growing camellias, many problems can be encountered, among which the threat of diseases and pests is significant. The most common disease is anthracnose, the control of which can be learned from the diseases and pests control of Spathiphyllum. The main pests of camellias are scale insects, aphids, black mealybugs, and stem borers. Let's take a look at the main insect pests and their control.
【Main Insect Pests and Their Control】
<Scale Insects>
Harm: Among the main insect pests and their control of camellias, scale insects lay a large number of eggs, mainly吸食枝叶上的汁, causing the leaves to become dark and yellow, and eventually leading to their death. Their secretions can also cause sooty mold disease.
Control: Scale insects tend to be concentrated, and when the number is small, the pests can be directly eliminated from the branches. When the number is large, it is necessary to take advantage of the vulnerability of the newly hatched larvae to drugs and master the timing of applying pesticides.
<Aphids>
Harm: Aphids mainly concentrate on the tender shoots of camellias, absorbing the juices from the branches and leaves, causing the buds and leaves to shrink and affecting their growth. Similarly, the secretions of aphids can also cause sooty mold disease.
Control: Generally, when affected by aphids, 50% phosphamidone emulsion 2000 times liquid or 50% dimethoate emulsion can be sprayed on the camellia plants every 3-5 days, usually 3 times to eliminate aphids.
<Black Mealybugs>
Harm: Black mealybugs also absorb the sap from the leaves, and their secretions can lead to a large occurrence of sooty mold disease, severely affecting the normal photosynthesis of camellias and causing a large number of falling flowers in severe cases.
Control: When black mealybugs are found among the main insect pests and their control of camellias, if it is during the peak period of egg hatching, you can use fenitrothion, malathion, or dimethoate for spraying, once every 7 days for effective control.
<Stem Borers>
Harm: Among the diseases and pests of camellias, stem borers mainly harm the branches of camellias, causing the infested branches to wither and die. Generally, the damage is severe from March to April and August to September.
Control: Cut and burn the branches infested with stem borers. During the peak period of adult emergence, you can use 20% dimethoate emulsion 500 times liquid or 90% dichlorvos 1000 times liquid for spraying. In the larval stage, 90% dichlorvos 500 times liquid can also be used for spraying.
The above content provides a detailed answer to the diseases and pests of camellias and their control. Through the above content, we can be more confident in growing camellias.
The information introduced above (Green Plant Enthusiast Network) on the diseases and pests of camellias and their main insect pests and control in green plants and flowers may be helpful to you in your daily life!